METHOD OF OBTAINING PECTIN

摘要

The invention relates to the food industry and can be used for producing pectin. The invention in essence involves the following steps: pectin-containing raw material is subjected to hydrolysis-extraction using potable water by cavitation treatment in a hydro-acoustic extractor-disintegrator with a cavitation index K = (0.2-1.9); the resulting pulp is divided into a liquid and a solid phase in the field of action of centrifugal forces with a separation factor FR = (90-100), after separation the resulting liquid phase containing 0.5-0.6 % suspended matter relative to its own weight is subjected to additional microfiltration using membranes in which the pore sizes are (1-10)10<-6> m until the suspended matter content is not more than 0.1 % of its own weight; concentration by ultrafiltration is carried out with ultrafiltration membranes on a solid substrate and with a pore diameter of (1-10)10<-9> m, with a flow rate of the liquid phase of 0.1 - 2.0 m/s and a pressure of 0.5-3.1 kg/cm<2>, until the pectin substances content in the resulting concentrate reaches 3.5-4.2 %. After the ultrafiltration concentration, further concentration is carried out in a vertical double-bodied direct-flow circulation/film type vacuum-evaporation device at a pressure of 0.09-0.093 Mpa. The resulting concentrate, containing 8-15 % pectin substances, is then dried at a temperature of 75-92 DEG C.